/*
 * ============================================================
 *  GEO系统 三端独立UI架构
 * ============================================================
 *  
 *  【架构规则 - 以后所有新增功能必须遵守】
 *  
 *  桌面端 (>1024px)：侧栏220px + flex内容区 + 居中弹窗
 *  平板端 (769-1024px)：窄侧栏180px + 3列卡片
 *  手机端 (≤768px)：完全独立UI！！！
 *    - 侧栏隐藏，左滑呼出
 *    - 底部固定Tab主导航(首页|关键词|创作|排名|设置)
 *    - 全屏宽度内容区
 *    - 全屏底部滑出弹窗
 *    - 48px大按钮 + 44px触控输入
 *    - FAB浮动快捷按钮
 *  
 *  样式分层：
 *    第1层 (L1-L200)：基础样式(所有端共用)
 *    第2层 (L200-L300)：桌面端显式样式
 *    第3层 @media(max-width:768px)：手机端独立覆盖
 *    第4层 @media(769-1024px)：平板端微调
 *  
 *  【新增页面规则】
 *    1. HTML用基础class (page-header/card/data-table/btn-primary)
 *    2. 基础样式自动适配桌面端
 *    3. 无需写任何@media —— 手机端自动应用独立UI
 *    4. 如需手机端特殊处理，只在 @media(max-width:768px) 中添加
 * ============================================================
 */

/* ===== GEO AI搜索优化系统 - 响应式样式 ===== */
*{margin:0;padding:0;box-sizing:border-box;}
:root{
  --primary:#4F46E5;--primary-light:#EEF2FF;--primary-dark:#4338CA;
  --success:#10B981;--success-light:#ECFDF5;
  --warning:#F59E0B;--warning-light:#FFFBEB;
  --danger:#EF4444;--danger-light:#FEF2F2;
  --bg:#F8FAFC;--card:#fff;--text:#1E293B;--text2:#64748B;--text3:#94A3B8;
  --border:#E2E8F0;--border-light:#F1F5F9;
  --shadow:0 1px 3px rgba(0,0,0,.08);--shadow-md:0 4px 12px rgba(0,0,0,.1);--shadow-lg:0 20px 60px rgba(0,0,0,.2);
  --radius:10px;--radius-sm:8px;--radius-xs:6px;
  --transition:0.2s ease;
}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);font-size:14px;line-height:1.65;
  -webkit-tap-highlight-color:transparent;-webkit-font-smoothing:antialiased;
}

/* ===== Typography Scale ===== */
h1{font-size:1.5rem;font-weight:700;line-height:1.3;}
h2{font-size:1.25rem;font-weight:600;line-height:1.4;}
h3{font-size:1.125rem;font-weight:600;line-height:1.4;}
h4{font-size:1rem;font-weight:600;}
p{line-height:1.65;}

/* ===== Auth ===== */
#auth-page.page.active{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#4F46E5 0%,#7C3AED 100%);}
.auth-container{background:#fff;border-radius:16px;padding:30px;width:90%;max-width:400px;box-shadow:0 20px 60px rgba(0,0,0,.2);}
.auth-header{text-align:center;margin-bottom:24px;}
.auth-logo{width:60px;height:60px;border-radius:16px;background:linear-gradient(135deg,#4F46E5,#7C3AED);color:#fff;font-size:24px;font-weight:700;display:flex;align-items:center;justify-content:center;margin:0 auto 12px;}
.auth-header h1{font-size:22px;color:var(--text);}
.auth-header p{color:var(--text3);font-size:13px;margin-top:4px;}
.auth-tabs{display:flex;margin-bottom:20px;border-radius:8px;overflow:hidden;border:1px solid var(--border);}
.auth-tab{flex:1;padding:10px;border:none;background:#F8FAFC;font-size:14px;cursor:pointer;transition:var(--transition);color:var(--text2);}
.auth-tab.active{background:var(--primary);color:#fff;}
.auth-tab:hover:not(.active){background:#EDF2F7;}
.auth-form input{width:100%;padding:12px;margin-bottom:12px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:14px;outline:none;transition:var(--transition);}
.auth-form input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,70,229,.12);}
.btn-primary{background:var(--primary);color:#fff;border:none;border-radius:var(--radius-sm);padding:12px 24px;font-size:14px;cursor:pointer;transition:all var(--transition);width:100%;font-weight:500;letter-spacing:.5px;}
.btn-primary:hover{background:var(--primary-dark);box-shadow:0 4px 14px rgba(79,70,229,.35);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-sm{padding:7px 16px;font-size:13px;border-radius:var(--radius-xs);border:1px solid var(--border);background:#fff;cursor:pointer;transition:all var(--transition);color:var(--text2);min-height:36px;}
.btn-sm:hover{background:var(--bg);border-color:var(--primary);color:var(--primary);}
.btn-danger{background:var(--danger);color:#fff;border-color:var(--danger);}
.btn-danger:hover{background:#DC2626;box-shadow:0 4px 12px rgba(239,68,68,.3);color:#fff;}

/* ===== Main Layout ===== */
.page{display:none;}
.page.active{display:block;}
#main-page{min-height:100vh;}
.topbar{background:#fff;border-bottom:1px solid var(--border);padding:0 20px;height:56px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100;box-shadow:var(--shadow);}
.topbar-title{font-size:18px;font-weight:600;color:var(--text);}
.topbar-actions{display:flex;align-items:center;gap:12px;}
.user-name{font-size:13px;color:var(--text2);}
.menu-toggle{display:none;background:none;border:none;font-size:22px;cursor:pointer;padding:4px;color:var(--text2);border-radius:var(--radius-xs);transition:background var(--transition);}
.menu-toggle:hover{background:var(--bg);}

.main-layout{display:flex;min-height:calc(100vh - 56px);}
.sidebar{width:220px;background:#fff;border-right:1px solid var(--border);padding:16px 0;overflow-y:auto;flex-shrink:0;transition:left .3s ease,transform .3s ease;}
.sidebar-header{display:flex;align-items:center;gap:10px;padding:0 16px 16px;border-bottom:1px solid var(--border-light);margin-bottom:8px;}
.sidebar-logo{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,#4F46E5,#7C3AED);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:15px;}
.sidebar-header span{font-weight:600;font-size:15px;color:var(--text);}
.nav-list{list-style:none;}
.nav-item{padding:10px 16px;cursor:pointer;display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text2);transition:all var(--transition);border-left:3px solid transparent;margin:2px 0;}
.nav-item:hover{background:#F1F5F9;color:var(--text);}
.nav-item.active{color:var(--primary);background:var(--primary-light);border-left-color:var(--primary);font-weight:500;}
.nav-icon{font-size:16px;width:22px;text-align:center;}
.nav-parent{cursor:pointer;user-select:none;font-weight:500;}
.nav-arrow{font-size:10px;margin-left:auto;transition:transform .2s ease;color:var(--text3);}
.nav-parent.expanded .nav-arrow{transform:rotate(180deg);}
.nav-sub-item{padding:8px 16px 8px 40px;font-size:13px;}
.nav-sub-item .nav-icon{font-size:14px;width:18px;}
.nav-sub-item.active{border-left-color:var(--primary);}
.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(15,23,42,.4);z-index:90;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);}

.content{flex:1;padding:24px;overflow-y:auto;max-width:100%;min-height:calc(100vh - 56px);}
.content-page{display:none;}
.content-page.active{display:block;}

/* ===== Cards ===== */
.card{background:var(--card);border-radius:var(--radius);padding:24px;margin-bottom:16px;box-shadow:var(--shadow);border:1px solid var(--border-light);transition:box-shadow var(--transition),transform var(--transition);}
.card:hover{box-shadow:var(--shadow-md);}
.card-header{font-size:16px;font-weight:600;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--border-light);color:var(--text);}

/* ===== Stat Cards (Dashboard) ===== */
.stat-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px;margin-bottom:16px;}
.stat-card{background:#fff;border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);border:1px solid var(--border-light);transition:all var(--transition);cursor:pointer;position:relative;overflow:hidden;}
.stat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);}
.stat-card:active{transform:scale(.98);}
.stat-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),#7C3AED);opacity:0;transition:opacity var(--transition);}
.stat-card:hover::before{opacity:1;}
.stat-card .stat-icon{font-size:28px;margin-bottom:8px;display:block;}
.stat-card .stat-value{font-size:28px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;line-height:1.2;}
.stat-card .stat-label{font-size:13px;color:var(--text3);margin-top:4px;}

/* Stat card color variants */
.stat-card.card-success .stat-value{color:var(--success);}
.stat-card.card-success::before{background:linear-gradient(90deg,var(--success),#34D399);}
.stat-card.card-warning .stat-value{color:var(--warning);}
.stat-card.card-warning::before{background:linear-gradient(90deg,var(--warning),#FBBF24);}
.stat-card.card-danger .stat-value{color:var(--danger);}
.stat-card.card-danger::before{background:linear-gradient(90deg,var(--danger),#F87171);}

/* ===== Forms ===== */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.form-group{display:flex;flex-direction:column;gap:4px;}
.form-group.full{grid-column:1/-1;}
.form-group label{font-size:13px;color:var(--text2);font-weight:500;line-height:1.4;}
.form-group input,.form-group select,.form-group textarea{padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius-xs);font-size:14px;outline:none;transition:all var(--transition);font-family:inherit;background:#fff;color:var(--text);}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,70,229,.1);}
.form-group textarea{resize:vertical;min-height:80px;}
.form-group input::placeholder,.form-group textarea::placeholder{color:var(--text3);}

/* ===== Tables ===== */
.table-wrapper{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--radius-sm);border:1px solid var(--border-light);}
.data-table{width:100%;border-collapse:collapse;font-size:13px;}
.data-table th,.data-table td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--border-light);}
.data-table th{background:#F8FAFC;font-weight:600;white-space:nowrap;position:sticky;top:0;z-index:1;color:var(--text2);font-size:12px;text-transform:uppercase;letter-spacing:.3px;}
.data-table tr:nth-child(even){background:#FAFBFC;}
.data-table tr:hover{background:#EEF2FF;}
.data-table td{max-width:250px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.data-table td.break-word{white-space:normal;word-break:break-word;}

/* ===== Pagination ===== */
.pagination{display:flex;justify-content:center;align-items:center;gap:6px;margin-top:16px;flex-wrap:wrap;}
.pagination button{padding:7px 14px;border:1px solid var(--border);border-radius:var(--radius-xs);background:#fff;cursor:pointer;font-size:13px;color:var(--text2);transition:all var(--transition);}
.pagination button:hover{border-color:var(--primary);color:var(--primary);}
.pagination button.active{background:var(--primary);color:#fff;border-color:var(--primary);}
.pagination button:disabled{opacity:.5;cursor:not-allowed;}
.pagination span{color:var(--text3);font-size:13px;}

/* ===== Lists ===== */
.list-container{display:flex;flex-direction:column;gap:10px;}
.list-item{background:#fff;border:1px solid var(--border-light);border-radius:var(--radius);padding:16px;display:flex;justify-content:space-between;align-items:center;transition:all var(--transition);}
.list-item:hover{border-color:var(--primary);box-shadow:var(--shadow);}
.list-item-info{flex:1;min-width:0;}
.list-item-title{font-weight:500;font-size:15px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.list-item-meta{font-size:12px;color:var(--text3);margin-top:4px;}
.list-item-actions{display:flex;gap:6px;flex-shrink:0;}
.list-simple{display:flex;flex-direction:column;gap:8px;}

/* ===== Content Preview ===== */
.content-preview{background:#F8FAFC;border:1px solid var(--border-light);border-radius:var(--radius-sm);padding:16px;white-space:pre-wrap;font-size:14px;line-height:1.8;max-height:400px;overflow-y:auto;color:var(--text);}

/* ===== Modal ===== */
.modal{position:fixed;inset:0;background:rgba(15,23,42,.5);z-index:200;display:none;align-items:center;justify-content:center;padding:16px;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);}
.modal.active{display:flex;}
.modal:not(.active){display:none;}
.modal-content{background:#fff;border-radius:14px;padding:28px;width:100%;max-width:520px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-lg);animation:modalIn .25s ease;}
.modal-lg{max-width:700px;}
.modal-sm{max-width:380px;}
.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding-bottom:12px;border-bottom:1px solid var(--border-light);}
.modal-header h3{font-size:18px;color:var(--text);}
.modal-close{cursor:pointer;font-size:20px;color:var(--text3);width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:all var(--transition);border:none;background:transparent;}
.modal-close:hover{background:#FEE2E2;color:var(--danger);}

@keyframes modalIn{from{opacity:0;transform:translateY(20px) scale(.97);}to{opacity:1;transform:translateY(0) scale(1);}}

/* ===== Buttons ===== */
.btn-row{display:flex;gap:10px;justify-content:center;padding:12px 0 0;}
.btn-row button{min-height:40px;}
.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;flex-wrap:wrap;gap:12px;}
.page-header h2{font-size:1.25rem;color:var(--text);}
.page-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap;}
.filter-row{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap;}

/* ===== Status Badge ===== */
.badge{padding:3px 10px;border-radius:12px;font-size:12px;font-weight:500;display:inline-block;line-height:1.5;}
.badge-active{background:#ECFDF5;color:#059669;}
.badge-paused{background:#FFFBEB;color:#D97706;}
.badge-draft{background:#F1F5F9;color:#64748B;}
.badge-published{background:var(--primary-light);color:var(--primary-dark);}

/* ===== Toast ===== */
.toast{position:fixed;top:24px;left:50%;transform:translateX(-50%);background:#1E293B;color:#fff;padding:12px 28px;border-radius:var(--radius-sm);font-size:14px;z-index:999;opacity:0;transition:opacity .3s ease,transform .3s ease;pointer-events:none;box-shadow:var(--shadow-md);transform:translateX(-50%) translateY(-10px);}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}

/* ===== Charts ===== */
.chart-container{width:100%;height:300px;position:relative;}

/* ===== Settings ===== */
.settings-info p{margin-bottom:10px;color:var(--text2);line-height:1.7;}

/* ===== Loading States ===== */
.loading{position:relative;overflow:hidden;}
.loading::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.6),transparent);animation:shimmer 1.5s infinite;}
@keyframes shimmer{0%{transform:translateX(-100%);}100%{transform:translateX(100%);}}

.loading-overlay{position:fixed;inset:0;background:rgba(248,250,252,.85);z-index:300;display:none;align-items:center;justify-content:center;flex-direction:column;gap:16px;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);}
.loading-overlay.active{display:flex;}
.loading-spinner{width:44px;height:44px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite;}
@keyframes spin{to{transform:rotate(360deg);}}
.loading-text{font-size:14px;color:var(--text2);}

/* ===== Empty State ===== */
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:48px 24px;text-align:center;color:var(--text3);}
.empty-state .empty-icon{font-size:48px;margin-bottom:12px;opacity:.5;}
.empty-state .empty-title{font-size:16px;font-weight:500;color:var(--text2);margin-bottom:4px;}
.empty-state .empty-desc{font-size:13px;}

/* ===== Image Grid ===== */
.image-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px;}
.image-grid .grid-item{border-radius:var(--radius);overflow:hidden;border:1px solid var(--border-light);transition:all var(--transition);}
.image-grid .grid-item:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);}

/* ===== Publish Tabs ===== */
.publish-tab-panel{display:none;}
.publish-tab-panel.active{display:block;}
.tabs-row .tab-btn.active{background:var(--primary) !important;color:#fff !important;border-color:var(--primary) !important;}
.tabs-row .tab-btn{padding:8px 16px;border:1px solid var(--border);border-radius:var(--radius-xs);background:#fff;cursor:pointer;font-size:13px;transition:all var(--transition);color:var(--text2);}
.tabs-row .tab-btn:hover{background:var(--bg);}

/* ===== Card layout for tables on small screens ===== */
@media(max-width:480px){
  .data-table-card{display:block;}
  .data-table-card thead{display:none;}
  .data-table-card tbody,.data-table-card tr,.data-table-card td{display:block;}
  .data-table-card tr{margin-bottom:12px;border:1px solid var(--border-light);border-radius:var(--radius-sm);padding:12px;background:#fff;}
  .data-table-card td{padding:6px 0;border:none;white-space:normal;text-align:left;font-size:13px;}
  .data-table-card td::before{content:attr(data-label);font-weight:600;display:block;font-size:11px;color:var(--text3);text-transform:uppercase;margin-bottom:2px;}
}

/* ===== Mobile Responsive ===== */
/* =================================================================
 *  移动端独立UI (Mobile-First Independent UI)
 *  =================================================================
 *  规则：手机端使用独立UI系统，非简单缩放桌面端
 *  以后所有新增功能必须同时适配本移动UI规范
 *  ================================================================= */
@media(max-width:768px){
  /* ── 全局布局 ── */
  .main-layout{display:block;}
  .sidebar{display:none !important;}
  .sidebar.open{display:block !important;position:fixed;left:0;top:48px;bottom:60px;z-index:95;width:260px;transition:left .3s;box-shadow:4px 0 20px rgba(0,0,0,.15);}
  .sidebar-overlay{display:block;opacity:0;pointer-events:none;transition:opacity .3s;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:94;}
  .sidebar-overlay.show{opacity:1;pointer-events:auto;}
  .content{width:100%;padding:12px 12px 80px 12px;overflow-y:auto;-webkit-overflow-scrolling:touch;}

  /* ── 顶栏 ── */
  .topbar{height:48px;padding:0 12px;position:sticky;top:0;z-index:90;background:#fff;border-bottom:1px solid var(--border-light);}
  .topbar-title{font-size:16px;font-weight:600;}
  .menu-toggle{display:flex !important;align-items:center;justify-content:center;width:36px;height:36px;border:none;background:none;font-size:22px;cursor:pointer;}
  .topbar-actions .user-name{display:none;}
  .topbar-actions{gap:4px;}
  .topbar-actions button{font-size:12px;padding:5px 10px;}

  /* ── 页面内容 ── */
  .page-header{flex-direction:column;align-items:stretch;gap:8px;margin-bottom:12px;}
  .page-header h2{font-size:18px;}
  .page-actions{display:flex;flex-wrap:wrap;gap:6px;}
  .page-actions button{font-size:12px;padding:7px 12px;white-space:nowrap;}
  .page-actions input,.page-actions select{font-size:13px;height:36px;min-width:60px;}

  /* ── 统计卡片 ── */
  .stat-cards{grid-template-columns:repeat(2,1fr);gap:8px;}
  .stat-card{padding:14px 10px;}
  .stat-card .stat-icon{font-size:22px;}
  .stat-card .stat-value{font-size:20px;}
  .stat-card .stat-label{font-size:11px;}

  /* ── 表单（大触控） ── */
  .form-grid{grid-template-columns:1fr;gap:10px;}
  .form-group input,.form-group select,.form-group textarea{min-height:44px;font-size:16px !important;padding:10px 14px;}
  .btn-primary{height:48px;font-size:16px;width:100%;}
  .btn-sm{min-height:36px;font-size:13px;padding:6px 12px;}

  /* ── 表格→卡片 ── */
  .table-wrapper{overflow-x:auto;}
  .data-table{font-size:12px;}
  .data-table th,.data-table td{padding:8px 6px;white-space:nowrap;}
  .data-table td{max-width:120px;overflow:hidden;text-overflow:ellipsis;}

  /* ── 弹窗（全屏底部滑出） ── */
  .modal{align-items:flex-end !important;padding:0 !important;background:rgba(0,0,0,.5);}
  .modal-content{margin:0 !important;padding:20px 16px !important;border-radius:18px 18px 0 0 !important;max-height:90vh;max-width:100% !important;width:100% !important;animation:modalSlideUp .3s ease;overflow-y:auto;}
  .modal-lg{max-width:100% !important;}
  .modal-close{width:32px;height:32px;font-size:18px;}

  /* ── 图表 ── */
  .chart-container{height:200px;}

  /* ── 子导航 ── */
  .nav-sub-item{padding:8px 16px 8px 36px;font-size:13px;}
  .nav-children{background:#FAFBFC;}

  /* ── 创建卡片（手机2列） ── */
  .create-cards{grid-template-columns:repeat(2,1fr);gap:8px;}
  .create-card{padding:16px 12px;}
  .create-card-icon{font-size:28px;}
  .create-card-title{font-size:14px;}
  .create-card-desc{font-size:11px;}

  /* ── 活动列表 ── */
  .list-item{flex-direction:column;align-items:flex-start;gap:8px;}
  .list-item-actions{align-self:flex-end;}

  /* ── 标签行 ── */
  .filter-row{flex-direction:column;gap:6px;}
  .filter-row select,.filter-row input{width:100%;}

  /* ── 发布标签 ── */
  .tabs-row{gap:4px !important;}
  .tab-btn{font-size:11px !important;padding:6px 10px !important;}
}

/* ===== 底部导航（始终移动端） ===== */
.mobile-nav{display:none;}
@media(max-width:768px){
  .mobile-nav{display:flex;position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--border-light);z-index:99;padding:4px 0 env(safe-area-inset-bottom);justify-content:space-around;box-shadow:0 -2px 10px rgba(0,0,0,.06);}
  .mobile-nav-item{display:flex;flex-direction:column;align-items:center;padding:4px 0;color:var(--text3);text-decoration:none;font-size:10px;cursor:pointer;flex:1;transition:color .2s;-webkit-tap-highlight-color:transparent;}
  .mobile-nav-item.active{color:var(--primary);}
  .mobile-nav-icon{font-size:22px;margin-bottom:1px;}
  .mobile-nav-label{font-size:10px;}

  /* ── FAB ── */
  .fab{display:flex;align-items:center;justify-content:center;position:fixed;bottom:80px;right:16px;width:48px;height:48px;border-radius:50%;background:var(--primary);color:#fff;border:none;font-size:26px;cursor:pointer;z-index:97;box-shadow:0 4px 16px rgba(79,70,229,.4);transition:transform .2s;}
  .fab:active{transform:scale(.85);}
  .fab-menu{display:none;position:fixed;bottom:140px;right:16px;z-index:97;flex-direction:column;gap:8px;}
  .fab-menu.show{display:flex;}
  .fab-item{min-height:40px;padding:10px 20px;background:#fff;border:1px solid var(--border-light);border-radius:20px;font-size:13px;cursor:pointer;box-shadow:var(--shadow);white-space:nowrap;-webkit-tap-highlight-color:transparent;}
}

/* ── 平板端（768-1024px）保持桌面布局但缩窄侧栏 ── */
@media(min-width:769px) and (max-width:1024px){
  .sidebar{width:180px;}
  .content{padding:16px;}
  .stat-cards{grid-template-columns:repeat(3,1fr);}
}


/* ===== Extra small screens ===== */
@media(max-width:400px){
  .stat-cards{grid-template-columns:1fr 1fr;}
  .stat-card .stat-value{font-size:20px;}
  .stat-card .stat-icon{font-size:22px;}
  .modal-content{padding:16px 12px;}
  .data-table th,.data-table td{padding:8px 6px;}
  .data-table td{max-width:100px;}
  .topbar{padding:0 8px;}
  .content{padding:8px;}
  .pagination button{padding:6px 10px;font-size:12px;}
}

/* ===== Utility ===== */
.text-truncate{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.text-primary{color:var(--primary);}
.text-success{color:var(--success);}
.text-warning{color:var(--warning);}
.text-danger{color:var(--danger);}
.text-muted{color:var(--text3);}
.flex-center{display:flex;align-items:center;justify-content:center;}
.gap-8{gap:8px;}
.mt-8{margin-top:8px;}
.mt-16{margin-top:16px;}
.mb-8{margin-bottom:8px;}
.mb-16{margin-bottom:16px;}

/* ===== Dashboard活动列表 ===== */
.activity-list{display:flex;flex-direction:column;gap:0;}
.activity-item{display:flex;align-items:flex-start;gap:12px;padding:10px 0;border-bottom:1px solid #f1f5f9;}
.activity-item:last-child{border-bottom:none;}
.activity-icon{font-size:18px;flex-shrink:0;width:28px;text-align:center;}
.activity-content{flex:1;display:flex;flex-direction:column;gap:2px;}
.activity-text{font-size:13px;color:var(--text);}
.activity-time{font-size:11px;color:var(--text3);}

/* ===== 手机创作中心 ===== */
.create-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:16px;}
.create-card{background:var(--card);border-radius:12px;padding:20px 16px;text-align:center;cursor:pointer;box-shadow:var(--shadow);transition:.2s;border:2px solid transparent;}
.create-card:active{transform:scale(.96);border-color:var(--primary);}
.create-card-icon{font-size:36px;margin-bottom:8px;}
.create-card-title{font-size:15px;font-weight:600;color:var(--text);margin-bottom:4px;}
.create-card-desc{font-size:12px;color:var(--text3);}
@media(min-width:769px){.create-cards{grid-template-columns:repeat(4,1fr);}}

/* ===== 快速创作弹窗(手机优化) ===== */
.quick-create-modal .modal-content{padding:20px;max-width:100%;border-radius:18px 18px 0 0;margin:0;position:fixed;bottom:0;left:0;right:0;max-height:85vh;animation:modalSlideUp .3s ease;}
.quick-create-modal .btn-primary{height:50px;font-size:16px;}

/* ===== 新手引导 ===== */
.onboarding-overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:300;display:flex;align-items:center;justify-content:center;padding:20px;}
.onboarding-card{background:#fff;border-radius:16px;padding:30px;max-width:360px;width:100%;text-align:center;box-shadow:0 20px 60px rgba(0,0,0,.3);}
.onboarding-card h3{font-size:20px;margin-bottom:12px;}
.onboarding-card p{color:var(--text2);margin-bottom:20px;line-height:1.6;}
.onboarding-card .btn-primary{width:auto;display:inline-block;padding:12px 30px;}

/* ===== 桌面端显式重置（确保不被移动样式污染）===== */
@media(min-width:769px){
  .main-layout{display:flex !important;}
  .sidebar{display:block !important;position:relative !important;left:0 !important;width:220px !important;}
  .sidebar-overlay{display:none !important;}
  .content{width:auto !important;padding:24px !important;padding-bottom:24px !important;flex:1 !important;}
  .menu-toggle{display:none !important;}
  .mobile-nav{display:none !important;}
  .fab,.fab-menu{display:none !important;}
  .modal{align-items:center !important;padding:16px !important;}
  .modal-content{margin:0 auto !important;border-radius:12px !important;max-width:500px !important;width:auto !important;animation:none !important;position:relative !important;}
  .modal-lg{max-width:700px !important;}
  .form-grid{grid-template-columns:1fr 1fr !important;}
  .stat-cards{grid-template-columns:repeat(4,1fr) !important;}
  .page-header{flex-direction:row !important;align-items:center !important;}
  .page-actions{width:auto !important;}
  .form-group input,.form-group select,.form-group textarea{min-height:auto !important;font-size:14px !important;}
  .btn-primary{height:auto !important;font-size:14px !important;width:auto !important;}
  .list-item{flex-direction:row !important;align-items:center !important;}
  .filter-row{flex-direction:row !important;}
  .filter-row select,.filter-row input{width:auto !important;}
  .tabs-row{gap:8px !important;}
  .tab-btn{font-size:13px !important;padding:8px 16px !important;}
  .create-cards{grid-template-columns:repeat(4,1fr) !important;}
}